Wire winding tool



SePf- 7, 1954 'L E. HAAGl-:NSEN 2,583,449

WIRE WINDI'NG TOOL Filed Deo. 8, 1948 Afro/mfr Patented Sept. 7, 1.954

WIRE WINDINc 'roioL Leif E. Haagensen, Barrington, Ill., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application December 8, 1948,` Serial No. 64,107

5 Claims.

This invention relates to wire winding tools and more particularly to a tool for winding electrical connector wires about wire type terminals.

It is an object of the present invention to provide an improved wire winding tool for winding a' connector wire tightly about a wire terminal.

In accordance with one embodiment of the invention, a rotatable bit connected to a suitable drive is provided at its forward. end with an axial bore for receiving the terminal wire therein and with an axially extending eccentrically disposed recess for receiving an end portion of a connector Wire therein. A winding finger projecting from the forward end of the bit has an inwardly directed wiping face spaced from the axis of the bit a distance sufficient to receive a connector Wire between itself and a terminal wire inserted in the central recess in the bit so that the wiping finger will, upon rotation of the bit when a terminal wire and a connector wire are in position in the bit, engage the connector wire and wind it in a helical fashion around the terminal wire.

Other objects and advantages will become ap' parent by reference to the following detailed description and the accompanying drawings illustrating a preferred embodiment thereof in which Fig. 1 is a side elevational view of the wire winding tool associated with an air-motor drive;

Fig. 2 is an enlarged fragmentary axial sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is an elevational view of the front end of the tool;

Fig. 3a is an end view, similar to Fig. 3, of a modified wire winding bit;

Fig. 4 is an enlarged sectional view, similar to Fig. 2, showing a terminal wire inserted therein and showing the bit of the tool moved axially rearwardly;

Fig. 5 is an axial sectional view of a portion of the tool showing a connector wire partially wound around the terminal wire inserted therein;

Fig. 6 is a fragmentary view, similar to Fig. 5,

showing a connector wire completely wound The present wire Winding tool is designed to attach a connector wire I0 (Fig. 8) to a terminal wire II by winding the bared end thereof about the terminal in the form of a helix and with the end portion I2 thereof in tight engagement with the terminal.

The tool I4 comprises a cylindrical bit I5 (Figs. 2 and '4), telescopingly mounted for rotary and limited axial movement within a non-rotatable tubular supporting member I6. The tubular member I 6, at its rear end, is internally threaded' and secured to the reduced threaded end of a cylindrical casing orhousing member I8 of a suitable driving mechanism which, in the present instance, is disclosed as being an air motor I9. The bit I5 is provided with a rearwardly projecting nat tongue or driving member 20, which is slid'- ingly received in a slot 2l of a rotatable shaft or drive member 22 and serves to establish a driving connection between the drive member 22 andy the bit I5. The drive member 22 forms a part of .a rotor or impeller (not shown) of the air motor I9. A control rod 23 engaging the rear end of the bit I5 serves to operatively interconnect the bit with an air valve (notv shown) of the air motor I9 and compressed air supplied to the motor I9 through an air line 2.4 urges the valve to its normally closed position and yieldingly maintains the rod 23 and the bit I5 in a normal forward or inoperative position. Upon rearward movement of the bit I5 relative to the tool I4, movement will be imparted to the rod 23 to effect the unseating of the airv valve and the admission of compressed air to the air motor, thereby effecting the operation of the air motor and the rotation of the driving member 22 and the bit I5.

At its forward end, the bit I5 is provided with a central or axial bore or cylindrical recess 21 which extends inwardly a predetermined distance from the front end thereof for receiving the end portion of the terminal Wire II therein and has a closed end with an end wall 23 against which the end of the terminal wire I I may engage. One or more axially directed eccentrically disposed recesses 3l) are formed in the bit I5 and extend a predetermined distance from the front end thereof for receiving the bared end portion of the connector wire Il). To aid in the manufacture of the preferred embodiment of the bit the recesses 3@ are in the form of grooves or slots which are closed on one side by the inner peripheral surface of the tubular member I6. As shown herein (Figs. 2, 3 and 7), there are two recesses 30 which extend through a substantial arcuate distance and are separated from each other by wall portions or ribs 32 provided with laterally disposed surfaces or shoulders 33. If desired, the recesses for receiving the connector wires may be formed as eccentrically disposed axially extending drilled holes 3II-I as shown in Fig. 3a. One or more wiper members or winding fingers 35 are provided extending axially beyond the end surface 36 of the tip and spaced radially a predetermined distance from the axis thereof. In the embodiment illustrated in the drawings (Fig. '7) two Wiper ngers 35 are provided which are formed as extensions of the wall portions or ribs 32 of the bit. The winding fingers 35 are provided with inwardly facing wiping surfaces 33 spaced form the axis of the bit a distance sufficient to receive an end portion of the connector wire I between itself and a terminal wire II inserted in the recess 2T.

In its normal or non-operative position, as shown in Fig. 2, the bit I5 is positioned with its forward end 36 substantially ilush with the end of the tubular member I5, in which position the end 36, the central bore 21, and the peripheral slots 30 of the bit I5, are clearly visible to the operator and enable the operator to readily insert the connector wire I0 and apply the tool to the terminal=wire II. With the connector wire I0 inserted in a recess 30 in the bit and bent laterally into the notch 42 in the tubular member I6, as indicated in dotted lines in Fig. 2, the tool, with the connector wire I0 therein, may be applied to a terminal wire II. With the terminal wire II positioned in the bore 21, and upon sufcient forward movement of the tool, the end of the terminal II will engage the wall 28 in the tip and cause a backward movement of the tip I5 relative to the tool, which rearward movement is transmitted to the rod 23 and the air valve to cause the operation of the air motor and the rotation of the bit I5. The bit I5 is shown in its rearward or operative position in Fig. 4 and, as it rotates, the shoulders 33 of the wall portions 32 and the lingers 35 of the bit engage the longitudinally disposed portion of the connector wire Ill in the recess 30 and carry it in a circular path about the terminal wire II. The portion of the connector wire Ill external of the tool is held fixed by the operator at a point adjacent the notch 42 in the tubular member I6 and, as the bit I5 rotates, an intermediate portion of the connector wire is wound in a loop around the terminal wire I I, as seen in Fig. 5. Continued rotation of the bit I5 causes the end of the connector wire in the grooves 3U to be withdrawn therefrom as the wiper finger 35 and the wiping surface 38 thereon engage successive portions of the connector wire I0 and wind it in spiral form tightly around the wire. The tool is normally held against the end of the terminal II during the winding operation and as the connector wire I0 is formed into a helix around the terminal as the helix is progressively formed by the bit I5,

it is moved by the end 35 thereof axially along the terminal II until it is completely formed, as shown in Fig. 6. It will be seen that the wiping surface 38 of the nger 35, being spaced the distance of the diameter of the connector Wire III from the periphery of the terminal wire II, serves to engage and wrap the connector wire I5, including the very end thereof, in tight engagement with the terminal II during a wire applying operation.

It is to be understood that the above-described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall Withing the spirit and scope thereof.

' What is claimed is:

1. A wire winding tool comprising a rotatable bit having a central cylindrical axially disposed recess for receiving an end portion of the cylindrical terminal therein and having an eccentrically disposed recess extending longitudinally from one end thereof for receiving an end portion of a connector wire therein, means for supporting said bit for rotation, means for rotating said bit, and a wiper element on the end of said bit having an inwardly directed wiping surface spaced from the walls of said cylindrical recess of the bit to provide a space between the wiping surface of said wiping element and a terminal in the axially disposed recess in the bit slightly greater than the diameter of the connector wire, said wiper element being operable to engage and wipe successive portions of said connector wire including the end thereof around and tightly against the cylindrical terminal in response to rotation of said bit.

2. In a wire winding tool, a bit for winding an end portion of a connector wire around a cylindrical terminal, said bit having a centrally disposed axially extending cylindrical recess of a diameter slightly larger than that of said cylindrical terminal for receiving said terminal therein and having an eccentrically disposed recess for receiving an end portion of a connector wire therein, and a wiping element on said bit extending from the end thereof and having a wiping surface spaced radially from the walls of said cylindrical recess a distance slightly greater than the diameter of the connector wire to be wound on the terminal for engaging successive portions of the connector wire as said wire is withdrawn from said recess for wiping the wire around and in tight engagement with said terminal.

3. A tool for winding a connector wire around a cylindrical terminal comprising a rotatable bit having an axial recess of a diameter slightly larger than that of the terminal for receiving the terminal and an eccentrically disposed recess extending from one end thereof for receiving an end portion of the connector wire, means for supporting said bit for rotation, means for rotating said bit, means on said bit supporting means for supporting said connector wire adjacent said end portion against rotation and adjacent the end of said bit, and a winding member on the end of said bit having an inwardly disposed wiping surface spaced from the walls of said axial recess a distance slightly greater than the diameter of the connector wire and slightly greater than the diameter of the connector wire and operable for engaging and holding successive portions of said end portion of the connector Wire positioned in said eccentrically disposed recess against a terminal wire positioned in said axial recess and to wind the connector wire about the terminal in response to rotation of the bit.

4. A tool for winding a connector wire around a cylindrical terminal comprising supporting means including a non-rotatable tubular member, a cylindrical bit rotatably mounted within said tubular member and having a central bore of a diameter slightly larger than that of the terminal extending inwardly a predetermined distance from one end thereof for receiving said terminal, said bit having a peripheral groove which extends longitudinally from one end and is closed at one side by the inner surface of the tubular member to form an eccentrically disposed recess for receiving an end portion of the connector wire, a Wiper member on said one end of the bit spaced radially from the walls of said central bore to receive a connector wire between the Wiper member and the terminal to hold the connector wire against the terminal, and means for rotating said bit to cause successive portions of a connector wire inserted in said eccentrically disposed recess to be engaged by the Wiper member and Wound around and in tight engagement with a terminal in said central bore.

5. A tool for winding a connector wire around a terminal comprising supporting means including a non-rotatable tubular member, a cylindrical bit rotatably mounted in said tubular member and having an axial recess of a diameter slightly larger than that of the terminal extending inwardly from one end thereof for receiving the terminal, said bit having a peripheral groove which extends longitudinally from said one end and in cooperation with the inner surface of said tubular member forms an eccentric recess for receiving an end portion of the connector Wire, a notch in the end of said tubular member for receiving a laterally bent portion of the connector Wire therein andforming a wire engaging surface for supporting said portion of the wire against rotation, a Wiper member on the end of said bit spaced radially from the Walls of said axial recess for receiving a connector Wire between the wiper member and the terminal and for holding the connector wire against the terminal, and drive means carried by said supporting means for rotating said bit to cause successive portions of the connector wire inserted in said eccentric recess to be engaged by the Wiper member and Wound around and in tight engagement with said terminal.

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